80 



FARM MECHANICS 



tion with dog power must be light. It also is necessary 

 to eliminate the friction as much as possible. 



The best way to make a dog power is to use a light 

 wooden sulky wheel for the revolving turn table. Next 

 best to the sulky wheel is a light buggy wheel. The 

 wheel is made fast to an upright iron shaft that is 

 stepped into an iron oil well at the bottom and inclined 



DOG 



POWER 



Figure 106. Dog Churn Power. A wheel keyed to an iron shaft 

 is placed at an angle as shown. The weight of the dog turns the 

 wheel and power is conveyed to the churn by a light rope belt. It is 

 necessary to confine the dog between stationary partitions built like 

 a stall over the wheel. 



at an angle of about fifteen degrees to give the neces- 

 sary power. To steady the top of the shaft a light box- 

 ing is used, preferably a ballbearing bicycle race to re- 

 duce friction. Power is conveyed to the churn by 

 means of a grooved pulley on the top of the shaft. A 

 small, soft rope or heavy string belt runs from this 

 pulley to a similar pulley connected with the churn. 



Dogs learn to like the work when fed immediately 

 after the churning is finished. Dogs have been known 

 to get on to the power wheel to call attention to their 



